Final answer:
Elevated liver enzymes would be the finding that would alert the nurse to the development of HELLP syndrome in a pregnant client.
Step-by-step explanation:
The finding that would alert the nurse to the development of HELLP syndrome in a pregnant client is Elevated liver enzymes. HELLP syndrome is a serious complication of pregnancy that stands for Hemolysis, Elevated Liver enzymes, and Low Platelet count. Elevated liver enzymes are a key indicator of liver damage and dysfunction, which is common in HELLP syndrome.